When I was a new hunter in the mid 1970's in my part of Ontario there were a lot of Winchester models 2200. (Canadian variant of the 1200) I don't remember any of the folks who owned them having any issues. These were farm guns that were worked hard with very little cleaning and maintenance. Internet complaints of the 1300 were broken slide arms (solder would undo). I read a lot about the plastic feed throats failing but in real life I think a lot of people are repeating things they have read on the internet. The 1200, 1300, 120, 2200 were built to be sold at competitive pricing levels. They will not last as long as others if subjected to thousands of rounds fired in the clay games. For your average hunter who looks after his shotgun they most likely will last a lifetime.
Darryl